Betty often buys books_______ Lu Xun.A. to B. by C. at
It’s easy ________you to say sorry, but remember __________ be late again.
Students should pay attention to ________the teacher in class.
—Did Mr. Green tell you ________? ---Yes. He said he went there in 2012.
Alice _______ in the street when a thief stole her bag and ran away.
Many trees ____ along the streets every year. So the air is very fresh now.